[PATCH v3 03/11] clocksource: sp804: add device tree support

Haojian Zhuang haojian.zhuang at linaro.org
Wed Mar 13 11:25:42 EDT 2013


On 13 March 2013 23:23, Pawel Moll <pawel.moll at arm.com> wrote:
> On Wed, 2013-03-13 at 14:17 +0000, Rob Herring wrote:
>> How about:
>>
>> 1 irq - TIMINT1
>> 2 irqs w/ same source # - TIMINTC
>> 2 irqs w/ different source # - TIMINT1 and TIMINT2
>
> On Wed, 2013-03-13 at 15:11 +0000, Haojian Zhuang wrote:
>> What's the scenario that we must use TIMINTC? TIMINT1 & TIMINT2 are
>> already enough on these two TIMERs. If we really needn't TIMINTC, we
>> need to support it. Since it's over-designed.
>>
>> If TIMINT1 & TIMINT2 aren't routed, and only TIMINTC is routed. It's another
>> case. We can consider it as replacement of TIMINT1.
>
> Just a thought... How to describe a SP804 with only TIMINT2 wired up?
>
> Paweł
>
>
There's no difference on TIMINTC is only used to replace TIMINT1 or TIMINT2.
We only need to tell sp804 driver which timer is using irq, and the irq number.



More information about the linux-arm-kernel mailing list